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2026-06-21T06:56:48Z

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= OpenSimulator Internals/AssetService =

== Overview ==

AssetService stores and serves asset blobs -- textures, meshes, scripts, notecards, and other content. Intentionally dumb -- no referential awareness. It does not know or care what references an asset.

This service is stateless and can be load-balanced across multiple ROBUST instances.

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== Storage Backends ==

{| class="wikitable"
! Backend !! Notes
|-
| Database blob (default) || Asset data stored as LONGBLOB in the assets table. Simple, works out of the box.
|-
| FSAssets || Asset data stored on the filesystem. Recommended for installations above 50GB. More efficient for large asset stores.
|}

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== Asset Properties ==

Assets are immutable by design -- no updates, only inserts. The database only grows. No built-in garbage collection exists.

When an object is rezzed on a foreign HyperGrid grid, assets are copied to that grid's asset table -- same UUID, separate copy, no link between them, no cleanup on either end.

=== Asset type classification (computed, not stored) ===

* IsBinaryAsset: Animation, Gesture, Simstate, Unknown, Object, Sound, SoundWAV, Texture, TextureTGA, Folder, ImageJPEG, ImageTGA, Mesh, LSLBytecode
* IsTextualAsset: everything else
* ContainsReferences: textual assets excluding Notecard, CallingCard, LSLText, Landmark

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== Database ==

See [[OpenSimulator Internals/Data Dictionaries#assets|assets table]] for the full database schema.

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== See Also ==

* [[OpenSimulator Internals/ROBUST Services]]
* [[OpenSimulator Internals/Data Dictionaries]]

OpenSimulator Internals/AssetService - Revision history

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